78060881 has 4 divisors (see below), whose sum is σ = 78078564. Its totient is φ = 78043200.

The previous prime is 78060869. The next prime is 78060901. The reversal of 78060881 is 18806087.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18806087 = 859 ⋅21893.

It can be written as a sum of positive squares in 2 ways, for example, as 31820881 + 46240000 = 5641^2 + 6800^2 .

It is a cyclic number.

It is not a de Polignac number, because 78060881 - 2⁶ = 78060817 is a prime.

It is a super-3 number, since 3×78060881³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78060811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3941 + ... + 13101.

It is an arithmetic number, because the mean of its divisors is an integer number (19519641).

Almost surely, 2^78060881 is an apocalyptic number.

It is an amenable number.

78060881 is a deficient number, since it is larger than the sum of its proper divisors (17683).

78060881 is an equidigital number, since it uses as much as digits as its factorization.

78060881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17682.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 78060881 is about 8835.2069019350. The cubic root of 78060881 is about 427.3770032488.

The spelling of 78060881 in words is "seventy-eight million, sixty thousand, eight hundred eighty-one".